Effects of nitrogen and phosphorus addition on soil microbial community composition in temperate typical grassland in Inner Mongolia Responses of plant community biomass to nitrogen and phosphorus additions in an alpine meadow on the Qinghai-Xizang Plateau Ecophysiological responses of Leymus chinensis to nitrogen and phosphorus additions in a typical steppe Response and correlation of above- and below-ground functional traits of Leymus chinensis to nitrogen and phosphorus additions Effects of nitrogen and phosphorus addition on soil phosphatase activity in different forest types Effect of inoculation of AMF on plant growth and phosphorus utilization in intercropped maize under chamber phosphorus addition on red soils in Dianchi Watershed Influence of nitrogen and phosphorus addition on the aboveground biomass in Inner Mongolia temperate steppe, China.